first commit

assets/scripts/GoalDetector.ts

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+// assets/scripts/GoalDetector.ts
+import { _decorator, Component, ITriggerEvent } from "cc";
+const { ccclass, property } = _decorator;
+
+@ccclass("GoalDetector")
+export class GoalDetector extends Component {
+  @property({ tooltip: "GameManager 节点（接收进球事件）" }) gameManagerPath =
+    "";
+
+  onTriggerEnter(event: ITriggerEvent) {
+    const other = event.otherCollider?.node;
+    if (!other) return;
+    if (other.name.includes("Ball")) {
+      // 简单通知
+      const gm = this.node.scene.getChildByPath(this.gameManagerPath);
+      gm?.emit("GOAL");
+    }
+  }
+}